Process of making cans or metal receptacles.



a. M. scHon.

PROCESS OF MAKING CANS 0R METAL RECEPTACLES.

APPLICATION FILED ocnzs. m4.

1 ,$46 ,947 o v Patented Nov. 20,191?

UNITED STATES PATENT OFFICE.

GEORGE M. SCHOTT, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI GALVA-NIZING COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Nov. 20, 1917.

Application filed October 29, 1914. Serial No. 869,194.

To all whom it may concern:

Be it known that I, GEORGE M. SoHo'rr, a citizen of the United States ofAmerica, and resident of Cincinnati, county of Hamilton, State of Ohio,have invented certain new and useful Improvements in Processes of MakingCans or Metal Receptacles, of which the following is a specification.

This invention relates to improvements in processes of making sheetmetal cans or rethereby producing a more perfect can than is produced ina case where the metal forming the can is first galvanized and thenmanufactured into a can.

One of the difiiculties ordinarily encountered in the manufacture oflarge metal cans or receptacles which are galvanized, is that the heatto which the cans are subjected during the galvanizing operation, setsup unequal temperature strains in the metal of the can and often causesit to distort or buckle to such an extent that it is rendered useless.countered in the manufacture of large rectangular cans employed in"refrigerating apparatus as the receptacle for the water to be frozen,since a slight distortion of the metal forming thebody portion. of thecan, prevents the easy removal of the ice therefrom.

An object therefore, of this invention is a process of making acan'particularly adapted to be used as a receptacle for water to befrozen in the manufacture of ice, which will prevent the objectionabledistortion above referred to, and in which the interior thereof is keptfree from corrugations or ribs,whereby smooth cakes of ice may beproduced.

This and other objects are attained in the This difficulty is likely tobe enprocess described in the following specification and illustrated inthe accompanying drawings in which:

Figure 1 is a perspective view of a can constructed according to myimproved process.

Fig. 2 is a sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2.

Fig. i is a somewhat enlarged fragmental sectional View of the metalsheet and the ribs formed thereon.

Fig. 5 is a somewhat enlarged fragmental sectional view illustrating amodified form of a rib.

Fig. 6 is another view illustrating a sheet having a modified form ofrib.

Fig. 7 is another View illustrating a modified form of ribs.

The can illustrated as being constructed according to the processembodying my invention, consists of a body portion 7 formed of a ribbedsheet of metal, and a base portion 8 also formed of sheet metal. Thebody portion consists of a sheet of metal having triangulated ribs 9formed therein. These ribs are preferably formed as illustrated in Fig.4. and extend longitudinally of the four faces of the can, being locatedon the outer surfaces of the can so that the inner surfaces will be leftsmooth and free from any obstructions which would cause or tend to causethe cake of ice formed in the can, to stick therein when an attempt ismade to remove it. In addition to this the interior of the can is thusrendered smooth so that objectionable corrugations and similarformations are prevented from being formed on the cake of ice. AlthoughI have illustrated the ribs of the body portion as extending parallel tothe vertical axis of the can, that is, from the closed bottom to theopen top of the can, the ribs may extend 1n any desired direction so asto stifl'en the can laterally or longitudinally as desired. In additionto this the to and bottom of the can must be formed so t at there willbe no reentrant or inwardly projecting shoulders or lugs which willprevent the ice from slipping out of the can. For thls reason I alsoconstruct the can so that the rlveting located at the top and along thelongitudinal seam of the can will lie flush with the inner edge thereof.Counter-sunk flat headed rivets are employed to engage the innersurfaces of the can, so as not to break the continuity of the smoothinterior surface. In constructing the can, themetal of the to portion ofthe sheet, above the ribs, is turne over to embrace a metal bandsurroundingthe outside of the body of the can and riveted thereto, thetwo thicknesses of sheet metal being held securely by means of therivets 11, the heads of which, on the inner faces of the can arecounter-sunk to be flush with the inner surface as shown in Fig. 3. Thisrim or band 10 is provided for the purpose of preventing the foldedportions forming the ribs, from being expanded by the pressure of thewater and also by theoperation of handlin the can. The bottom 8 issecured to thebo y portion as illustrated in Fig. 3, the sheet metalforming the body portion, being made sufliciently long to extend acrossthe bottom edge of the flange formed on the bottom 8 and around areinforcing band 12. This band 12 which reinforces the bottom 8,together with the flange of the bottom, and the two thicknesses of themetal formed of the sheet constituting the body portion of the can, are

held in place by means of the rivets 13. Be-

cause of this construction it is practically impossible for the bottomto be broken out and for the can to leak. By forming the bottom of thecan in this manner I have eliminated the necessity of perforating theBecause of this fact the can is rendered much more durable, since themetal of both 1 es the bottom and the body portion is left imperforate,thereby eliminating this additional feature of weakness where thegalvanizing would be liable to become dislodged because of the looseningof the rivets. The

to two edges of the sheet forming the body portion of the can arepreferably secured together by means of rivets as shown in Fig. 1 therivets in this case as in the construction disclosed in Fig. 3, at thetop of the can, also being countersunk so as to present a smoothinterior surface. which will permit the cakes of ice to be readilyremoved from the can.

Although I have illustrated the ribs 9 as to being triangular in shapeand formed from the sheet as shown in Fig. 4, I may also construct theribs to take on the formation illustrated in Fig. 5, or any similarformat on may be employed for the purpose of memes-r strengthening thecan to prevent buckling in the galvanizing process. In Fig. 6, I haveillustrated a form of rib which is formed solidly with the sheet, theribs being rolled into the sheet, as shown, or I may rivet or otherwisesecure separately formed ribs to the body of the can as shown in Fig. 7.

In the process of galvanizing the can, the joints and connections, aswell as all crevices and places where two surfaces of metal abut, as forexample where the two edges of the triangulated ribs abut, are filledwith the molten-zinc or other galvanizing metal employed, therebyfilling all joints and crevices. In addition to this the galvanizingprocess to which a can embodying my construction, is subjected rendersthe interior of the can perfectly smooth so that any inequality in theabutting1 edges, the joints where the rivets, pass t rough the sheet, orat the bottom of the can, are eliminated. This produces a can from whichice may be most easily removed and it produces a. can in which cakes oficehaving no corrugations or otheruneven surfaces are formed.

Having thus described my invention what I claim is:

1. A process of producing .a refrigerat 1 ing can consisting invconstructing a sheet metal can body having exterior ribs extendinglongitudinally thereof, with a smooth interior, and then galvanizing theinterior and exterior of the body and ribs.

2. A process for producing a refrigeratin can consisting in constructinga sheet meta body portion having hollow ribs upon its exterior, with asmooth interior, and a bottom secured to the body portion, and thengalvanizing the interior and exterior of the bottom, theribs, and thebody.

3. A process for producing a refrigerating can consisting inconstructing a sheet metal body-portion having exterior longitudinallyextending hollow ribs, with a bottom secured to the body portion, andthen galvanizing the interior and exterior of the body, ribs, andbottom.

4. A process for producingarefrigerating can consisting in constructinga sheet metal body-portion having hollow ribs u on its exterior, abottom secured to the b0 y-portion having hollow ribs upon its exterior,and reinforcing bands secured to the top and bottom of the body portion,and then galvanizing the interior and exterior of the body,

.ribs, bottom, and bands.

5. A process of producing a refrigerating can consisting in forming upona sheet of metal a series of transversely extending hollowribs, the ribsbeing located on one side of the sheet with the sheet portions betweenthem forming a continuous substantially smooth surface on the oppositeside,

bending the ribbed sheet to form the body of the can with the ribslocated to the exterior and extending longitudinally thereof, attachinga bottom securing a reinforcing band to the top and bottom of the body,and then immersing the can in galvanizing material to close the crevicesand 10ints.

In testimony whereof, I have hereunto subscribed my name this 26th'dayof ber, 1914.

GEORGE M. SCHOTT.

Witnesses;

WALTER F. MURRAY,. W. THORNTON Boom.

